નીચેની પ્રક્રિયા શ્રેણીમાં નીપજો $A$,$B$,અને $C$ ઓળખો:
$C_6H_5CONH_2$ $\xrightarrow{P_2O_5, \Delta} A$ $\xrightarrow[(ii) H_2O]{(i) DIBAL-H} B$
$A \xrightarrow[(ii) H_3O^+, \Delta]{(i) (CH_3CO)_2O/CH_3COONa} C$

• A
  $A$ = $C_6H_5CN$,$B$ = $C_6H_5CHO$,$C$ = $C_6H_5CH=CHCHO$
• B
  $A$ = $C_6H_5CN$,$B$ = $C_6H_5CHO$,$C$ = $C_6H_5CH=CHCOOH$
• C
  $A$ = $C_6H_5CN$,$B$ = $C_6H_5CH_2OH$,$C$ = $C_6H_5CH_2CH_2COOH$
• D
  $A$ = $C_6H_5CONHCH_3$,$B$ = $C_6H_5CHO$,$C$ = $C_6H_5CH=CHCHO$